(EDGE) New York City Police are investigating the weekend stabbing of a 28-year-old gay man as a possible anti-gay hate crime.

According to AM New York, the crime happened after 7 p.m. on Saturday when the victim was coming home from Staten Island on a northbound No. 1 train.

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The New York Post reports that the assailant started yelling anti-gay slurs at the victim who was traveling with his boyfriend and sister. As the train pulled into the 110th street stop in Morningside Heights, the attacker yelled "you faggot" and stabbed the victim in the left side of the chest before fleeing the train.

AMNY reports that the victim was taken to Mount Sinai St. Luke's hospital with at least three puncture wounds, about an inch apiece.

Police are investigating the incident as a hate crime.